Electric fan



FIG. 1 is a right side elevational view of an embodiment of an electric fan in accordance with the principles of our invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a rear plan view thereof; and,

FIG. 7 is a perspective view thereof. 

The ornamental design for an electric fan, as shown and described. 